IJCRR - Vol 06 Issue 15, August, 2014
STUDY OF VARIATIONS IN THE ORIGIN AND DISTANCE OF ORIGIN OF AXILLARY NERVE OF THE POSTERIOR CORD OF BRACHIAL PLEXUS
Author: Santosh M. Bhosale, Nagaraj S. Mallashetty
Background: Variations in the origin of axillary nerve from the posterior cord of brachial plexus and its distance of origin from mid clavicular point are important during surgical approaches to the axilla and upper arm, administration of anesthetic blocks, interpreting effects of nervous compressions and in repair of plexus injuries. The patterns of branching show population differences. Data from the South indian population is scarce. Objective: To describe the variations in the origin of the axillary nerve from the posterior cord of brachial plexus and its distance of origin from mid- clavicular point in the South Indian population. Materials and methods: Forty brachial plexuses from twenty formalin fixed cadavers were explored by gross dissection. Origin and order of branching of axillary nerve and its distance of origin from mid- clavicualr point was recorded. Representative photographs were then taken using a digital camera (Sony Cybershot R, W200, 7.2 Megapixels). Results: In forty specimens studied, 87.5% of axillary nerve originated from the posterior cord of brachial plexus and in 12.5% of specimens axillary nerve took origin from common trunk along with thoracodorsal or lower subscapular nerve or both. In 32.5% of the specimens axillary nerve had origin from posterior cord of brachial plexus at a distance of 4.6-5.0cm from mid-clavicular point.
Keywords: Posterior cord, Axillary, common trunk, mid clavicular point
Santosh M. Bhosale, Nagaraj S. Mallashetty. STUDY OF VARIATIONS IN THE ORIGIN AND DISTANCE OF ORIGIN OF AXILLARY NERVE OF THE POSTERIOR CORD OF BRACHIAL PLEXUS International Journal of Current Research and Review. Vol 06 Issue 15, August, 41-44
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